Heating system for incubators.



C. E. ADAIR. HEATING SYSTEM FOR INUUBATOB-S.

APPLICATION F ILED JANJJ, 1911.

2 SHEETSSHBET 1.

mwmm s cllmm 2, 4016901 #41 mm 01 51M O. E. ADAIR.

HEATING SYSTEM FOR iNGUBATOR-S.

APPLIOATIOH FILED JAN. 11, 1911.

Patented Oct; 29, 1912.

2 SHEETS-SHEET 2.

Fig 2 a flaw MM hi4 0.1M (Lam-1i, M b

. through a branch 14' mm the manifold 13,

' manifold 15. .At their distant ends all of i 'is similar, notwithstanding the gradual fall ranged outside of the return-pnxas, and as This is due to the fact that where the of incubators it is not necessary to provide located between the outgoing pipes and in the same plane. The outgoin pipes 9 are supplied with hot water throui a feed ipe 12 connected with them by a manifo]. 15 and the outgoing pi cs 10 are supplied which is connected wit lf the pipes 10 by a the outgoing pi es are connected by a manifold 16, which discharges the water from the outgoing pipes into the far ends of the -return-pipes. The inner ends of the returnpipes are connected by a manifold 17 which discharges into a common return-pipe 18. The return-pipe 18 is provided with hand valves 19 by which the flow may be interrupted or regulated when necessary. It will be apparent that since the outgoing radiating-pipes are similar in number and size to the return radiating-pipes, they have equal radiating surfaces therewith, and in each incubator the same holds true. For this rea son theheating effect upon all the incubators in temperature in the heatingfiuid between the fced'pipe l2 and the returi'rpipc 18.

perature of the heating-fluid in the outg radiating-pipes is highest, the tempcrat of the fluid in the corresponding portions of the return radiating-pipes is lowest, so that the same average eflect is produced through out. the extent of the pipes for any trans-- verse section thereof. It will be further apparent that as the outgoing pipes are arthe temperature of the water higher in the outgoingpipes, the greatest heating effect is produced in each incubator adjacent the front and rear walis thereof. nnd therefore at the points Where the greatest heat required to counteract the radiation through the walls. By this arrangement. therefore, I secure a fairly uniform distribution of heat above the whole surface of the egg-tra ys in each ineutnitorz The hot water which circulates through the pipe-system just described derived from a reservoir of considerable capacity in the form of a cylindrical tank 21. The hot water issues from this tank through a T 22. and passes thence through two fccd pipes which are controlled by hand-valves "Z4, and the feed-pipes 23 supply hot water to the feed-pipes l of the upper and lower tiers of heating-pipes. Owing to the equalized action of the radiatingpipcs throughoutthe rics independent thermostatic control of the tlow of water in each incubator, but the entire system can he accnra tely controlled by means of-singlc thermostatic devices located in the i master-incubators 5 and 6. To this end each i feed-pipc is provided with a i lCHV-CImiZPOl-l lingmalvc 25, of which the construction li'l illustrated particularly in Fig. 3. This valve is provided with a ing connected with the feed-pipes 2?) and iii, and with a conical vnlv eat 536. A conical valve 27 coiipera tes the valve ,nnd this valve is supported oy a rod oi which the upper end 18 connected to one end of a' le er 29. The other end of the lever connected to a rod 31, of which the lower end is connected to a level-urn: 3&2 fixed on a rock-shaft 33. The rock-shaft is journulcd in the end-wall of the mastenincul'iator, and at its inner end is provided with an arm 34 which rests upon a thermostatic device 35 located within the incubator. This thermostatic device may be of any ordinary or suitable form, but is illustrated as of the type comprising corrugated double diaphragms inclosing ether, or other volatile fluid. As the tcmrmrature in the master-incubator rises, the fluid in the thermostat expands, thereby expanding the diaphragms and raising the arm 34. This results in rocking the rock-shaft 33, thereby causing the arm 32 to draw down the rod 31, and, through the action of the lever 29 and the rod 28, the valve 27 is raised tou iird the valve-seat 26 so as to reduce the flow of water through the feed pipes.

The lever-nun 32 is provided with a counterweight 36 to maintain the arm 34- in engagement with the thermostat, and the rod 31 is connected with the arm 32 by an adjustable nut 37 which provides for adjustment. of the mechanf according to the temperature desired ii: ilnuibators. To avoid the use of a stutline ox, where the rod 28 en'iergnss from the valve-casing, the rod is curried upward thrmigh a stand-pipe 38 of which the upper end above the water levcl in the heating stcm. 'lhis stand-pipe pro vides convenient support for a bracket 39 upon which the lever 29 pivoted. As a further means for adjusting the operation of the i/liil'iilfisi'ihlt' irmclnmism, the lever 29 is provided with a sliding counterWeight 41. It will he appiur-nt that, through the operation of the armngcment just described. the low of Water throughout the serles of incul'mtors is controlled in accordance with the tei'nperaturc in the muster-incuhator, and, as already stated, the result is to produce a uni- .h'irm temperature throughout all of the incubators oi the series and to preserve this temperature approxinuitcly at :1 predetcrmined de e so long as the temperature of the hot utter in the reservoir 21 is substmr liali v shove such do ree ice the radiuting-circuit in case in valve 27 is me ad to its extreme upr position and into cngz: cment with its scat, a shuill vent 4Q pi'oi died in the valve. thit out being so i=1 per in" a of water \r ochv the tln-zrum-. -i

'means of a chain 48, with the draft-door 40 The heater 43 illustrated 1 may E of any ordinary or suitable form. It is connected with the reservoir 21 by means of a feed-pipe 44 and a return pipe 45, the i heater, the reservoir, and the pipes 44 and i 45 constituting a complete circuit independent of the incubator-heating circuit heretofore described. Whenever the heater 5 is operating the Water may flow freely through this circuit regardless of the action of the thermostatic controlling-valves 25 and of the degree to which the Water is flowing through the radiating-circuit, and thus the heater tends constantly to maintain the Water in the reservoir at a predetermined maximum temperature. The operation of the heater is controlled by means of a thermostatic damper-controller 46 which is connected with the feed-pipe 44. As the coin struction and use of devices of this character are Well known the construction of the damper-controller is not completely illustrated, but it is provided with the usual lever 47, one end of which is connected, by

of the heater, while the other end is connected, by means of a chain 51, with the damper 52 of the heater. This draft-controller operates in the usual manner to check the fire in the heater when the temperature of the water in the feed-pipe 44- rises to a predetermined degree. 7

The return-pipe 45 is connected, through a pipe 54, with the usual expansion-chamber 53 to provide for variations in the volume l 1 of the water. i It will be apparent from the foregoing 1 description that in'case the fire in the heater 5 should 0 out, or becdme so low as not eiiectivey to'heatthe water, the flow of Water through the heating circuit conipris ing the heater and the pipes 44 and 45 would cease. The hot water w. uld still continue to flow, however, through he radiatingrcircuit l iii-the incubators, subje t to the control of i the thermiistatic valves, and owing to the 1 considerable volume of hot water contained in the reservcin'this fio' may continue and the temperature of the incubators may be suitably maintained a considerable i period of time, sufiicient in practice to maintain the proper operatioi'i of the incutntorv until the'fire in the heater replenishe, ()n the other hand, in case the flow 0" l water through the radiating-ennu ho siderably reduced, or practie llru ruptcd, by the thermostatic vmeans of the hand-valves 19 heater may still continue to hear, tlrv in thereservoir and to maiutaln i;

I iect to predetermined maximum ready for such demands as may be made upon the system. An elastic system is thus provided in which the periods of maximum activity of the heater do not necessarily correspond to the periods of maximum demand in the incubators, and thus the labor and expense of attendance upon the heater and the incubators is substantially reduced, while at the same time a heater of comparatively small capacity may be employed since the reservoir provides temporarily for a greater output of heat than can be supplied immediately by the heater.

While in the description and in the following claim I have referred to the heatingfiuid as water, and while this is the fluid most commonly employed for this purpose, it will be obvious that the invention is not limited to the use of water for this'purpose, but that other fluids may be employed in connection with the novel arrangement of aarts hereinbefore described.

My invention is not limited to the details of construction and operation of the illustrated embodiment thereof, but may be embodied in various forms Within the nature of the invention as it is defined in the following claim.

I claim i In combination with aseri'es of incubator a heating-system therefor comprising water-heater; a hot-water reservoir of uhstantial capacity; inletand outletconnections between the reservoir and the'heater whereby a heating-circuit is established throug'h'the reservoir and the heater; radiating means for heating the incubators; inletand outlet-connections between said means and the reservoir. and independent the onnections between the reservoir and the h ater, whereby a radiating-circuit is estairlishcd through the radiating means entirely huh-pendent of the heating-circuit; thermostatic means for controlling the flow of water through the radiating-circuit, said means being subject to the temperature of the incubators nd adapted to maintain a predetcrmi ed temperature in the incubators: and thermostatic means for controlling the the in the heater, said means being subtemptrature of the water in the l n ("t and adapted to maintain. in mi circuit, a predetermined temperature higher than that of the incubators.

cumulus E. ADAIR.

Witnesses t), ism-n,

. More. 

